Scientific Mysteries: How Old Is Mankind?
| First published | October 1942 |
|---|---|
| Type | Essay |
| Series | Scientific Mysteries |
Publications (2)
| Date | Publication | Publisher | Type | Page |
|---|---|---|---|---|
| October 1942 | Amazing Stories, October 1942 | Ziff-Davis Publishing Company | MAGAZINE | 224 |
| 1943 | Amazing Stories Quarterly (Reissue), Spring 1943 | Ziff-Davis | MAGAZINE | 224 |53 |